| 1UI5: reference: Crystal structure of a gamma-butyrolactone autoregulator receptor protein in Streptomyces coelicolor A3(2)., Natsume R, Ohnishi Y, Senda T, Horinouchi S, J Mol Biol 2004 Feb 13;336(2):409-19. PMID: 14757054 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).